I'm an 18 year old male, and whenever as of today and yesterday , after masturbating i still have this tingling feeling right below the head of my penis ( right above where the stem meets the head). Its a pleasant feeling, as if i am being sexually stimulated ,even when my penis is flaccid, though at this point it is irritating as i cannot NOT focus on the feeling--its a bit distracting. I've tried masturbating again and again ( with false hope that this feeling is because of pent up sexual tension) but to no avail i still have the tingly sensation. It is not painful, does not burn or even hurt in any way, shape , or form. I masturbated 5 times today ( i normally don't masturbate this often, at most once per day if even that) because of the sensation. Could this be a problem or infection? I'm a virgin and with no history of STI's or STDs.